read alv toolbar print button

Hi SDNers,

I would like to capture the ucomm when user clicks on print button which is on ALV grid toolbar(used classes to display alv).

I can able to capture user defined button on alv tool bar, along with user defined, standard button are there. I need to read user command text when user clicked on print button on the alv toolbar.

Kindly let me know which class and wher i need to use the same to read the print button.

Thanks in advance,

Regards,

Sridhar